This information was disclosed by Deputy Secretary of the Armed and Non-Proliferation Control Office at the Christopher Yeaw State Department (Deputy Secretary of the Armed and Non-Proliferation Control Office in the U.S. State Department). He recalled that on June 22, 2020, the PS23 seismic station in Kazakhstan recorded an event of 2.75 magnitude in the area of the Chinese Lop Nur test camp, located about 720 km from the station. The authoritative stressed that, after analysing additional data, he considered it ‘very unlikely’ that the event would be a different than a single explosion. "Data does not match the mining detonation or the earthquake. They are precisely what can be expected after a atomic test" — [said Yeaw, quoted by Reuters](https://www.reuters.com/world/china/us-reveals-new-details-alleged-chinese-nuclear-test-2026-02-17/).
